245 

 the generic characters. They differ from other Ischyrus by 



their convex body and triangular antennomere IX. 



References . Blackwelder 1945:465; Crotch 1876:426(50); 

 Gemminger & Harold 1876:3691; Gorham 1887:40; Kuhnt 1909:63; 

 1911:44. 



Ischyrus n. sp . 1 



Diagnosis . Unique by having a pit-like groove in front 

 of the prosternum (Fig. 9b), antennomere IX triangular, 

 prosternal pinch lacking, metasternal coxal lines continuous 

 around base of mesocoxa, 9 visible elytral striae, and color 

 pattern (Fig. 25) . 



Description . Length: 5.8-6.4 mm; Width: 2.8-3.9 mm. 

 Body elongate, widest at basal third of elytra; 

 microreticulate, feebly shining; yellow with black pattern. 



Head yellow. Pronotum with central stripe, widest 

 basally; stripe can have a longitudinal elongate yellow 

 spot. Scutellum black. Each elytron with yellow epipleural 

 fold; humeral spot connected to base; sutural edge black; 

 anteriorly placed free central and apical spots; lateral 

 spot appearing as a marginal swelling; lateral margin edged 

 in black from lateral spot to apex. Prosternum yellow 

 except for black sternal plate. Meso- and metathorax black 

 except for yellow mid-lateral area on metasternum. Abdomen 

 yellow except for black medial spots on the posterior edge 

 of sternites II to IV. 



Head dorsal distance between eyes = 2.0 to 2.2 x eye 

 width; ocular striae reaching 0.75 distance to anterior 



